Headline: DHS Secretary Nielsen struggles to answer basic questions during hearingLink: https://www.vox.com/2018/12/20/18150586/nielsen-house-hearing-dhsPublication Date: Thursday, December 20, 2018Primary Source: VoxNon-Cato Author: Aaron RuparType: new media postFormat: New MediaNature of Mention: citedScholar: CatoResearch Area: Immigration and Labor MarketsSubjects: House Judiciary Committee hearing on DHS handling of immigration and border security